Landslide susceptibility analysis in Kabandungan District and Salak Geothermal Field, West Java

Abstract

Landslide hazards can be caused by several factors such as lithology, land cover, rainfall, slope, curvature, aspect, distance from river and road. In this study, a landslide susceptibility mapping was carried out using a Geographical Information System (GIS) in Kabandungan District and Salak Geothermal Field, West Java. The data used consisted of an inventory of points and landslide areas totalling 247 using a visual collection of Google Earth imagery. The Weight of Evidence (WoE) model is used to select parameters that cause landslides and to produce landslide vulnerability maps. The results of modeling indicate a positive relationship between selective factors for the occurrence of landslides, with Area Under Curve value of 0.89359; 0.76395; 0.75277; 0.73280 and 0.69093 respectively. Landslide susceptibility maps are made by adding up the WoE values for all the most influential parameters. Higher total WoE value is indicating a higher probability of landslide. Landslide susceptibility maps can be used as an effort to prevent potential hazards or mitigate landslides. In addition, this map can also be used furtherly for spatial planning and engineering activities.

Unveiling Subsurface Characteristics of Cliff Land in Sibang, Bali Through Geoelectric Investigation

“…The lack of comprehensive knowledge about the subsurface composition exacerbates these risks, making it imperative to conduct a geoelectrical investigation to uncover vital insights into the soil structure and composition [11] [9]. While existing studies may offer valuable insights into geoelectrical methods and soil characterization techniques, they often lack the specificity required to address the unique challenges posed by cliff environments in this particular region [12] [13] [14]. Thus, geoelectrical methods emerge as valuable tools for analyzing soil conditions on cliffs in the Sibang region However, it's noteworthy that such research has not been conducted in this area previously.…”